﻿/*                       NOTICE
 * 
 * This software was produced for the U. S. Government
 * under Contract No. FA8721-10-C-0001, and is
 * subject to the Rights in Noncommercial Computer Software
 * and Noncommercial Computer Software Documentation Clause
 * (DFARS) 252.227-7014 (JUN 1995)
 * 
 * Approved for Public Release: 11-2435
 * © 2011 The MITRE Corporation. All Rights Reserved. 
 * 
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 * 
 * http://www.apache.org/licenses/LICENSE-2.0
 * 
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */


using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;

namespace MXSE.MultiTouch.Gestures
{
    /// <summary>
    /// Abstract class for Gestures that use two or more contacts.
    /// </summary>
    public abstract class ComplexGesture : Gesture
    {
        /// <summary>
        /// List of BasicGesture children.
        /// </summary>
        protected List<BasicGesture> basics;
        public IList<BasicGesture> Basics
        {
            get
            {
                return basics.AsReadOnly();
            }
        }

        /// <summary>
        /// Constructor just meant to initialize list of BasicGestures.
        /// </summary>
        public ComplexGesture()
        {
            basics = new List<BasicGesture>();
        }

        public void AddBasic(BasicGesture basic)
        {
            basic.Parent = this;
            basics.Add(basic);
        }

        public override void Update()
        { }
    }
}
